H&M has become the latest high-street clothing brand to promise to 'detox' its supply chain, following a Greenpeace campaign that has already prompted Nike, Puma and Adidas to commit to the phasing out of hazardous chemicals by 2020. The clothing company announced the new commitment this week after a social media campaign by Greenpeace criticised its links to factories found to be discharging hazardous chemicals in China. H&M's pledge to eliminate discharges of all hazardous chemicals across its entire supply chain by 2020 follows similar promises by Nike , Puma and Adidas , which were also criticised by Greenpeace in two reports. The company will also introduce greater transparency by publishing information about chemicals being released from its suppliers' factories. H&M does not own any factories, but instead buys goods from around 700 independent suppliers, primarily i...